Silly - I'm blonde, but if the head was sticking up out of the ground, don't you think I would have at least tripped over it during the last dozen years? ;\)
Each house does have its own well, all off of the same aquafier. I have small tank and some mechanical thingy (not sure what its called, but it kicks on when the little tank empties) in the basement, and the pump is in the well (somewhere); I hope it never breaks!
We have enough water to take a long shower or bath, but if you run it continuously, like a sprinkler, it can't keep up. The woman next door ran her well dry, and it was a mess! They had to prime it with a hose run to the neighbor's house, and she had brown water for weeks after.

Its like my septic - its old but its working, so I don't want to mess with it.